Kira Carsen was a Human female Jedi Knight who dedicated herself to the service of the Jedi Order. Her service spanned both the Cold War and the Galactic War eras. These conflicts involved the Galactic Republic and the re-established Sith Empire. She entered the world on the capital planet of the Empire, Dromund Kaas, in 3663 BBY. Born to Sith parents, Kira underwent Sith training in her youth. However, after realizing she had become a Child of the Emperor—an unwilling pawn of the Sith Emperor—she escaped the Empire. Carsen managed to survive alone throughout her teenage years on the moon Nar Shaddaa. It was there she encountered Jedi Master Bela Kiwiiks, who recruited her into the Jedi Order as her Padawan. Carsen kept her true origins a secret from everyone.
In 3643 BBY, Carsen found herself entangled in a crisis that revolved around stolen Republic superweapons and the machinations of Sith Lord Darth Angral's agents. Consequently, she was reassigned as the Padawan to a young Jedi Knight, formerly a student of Jedi Master Orgus Din. Carsen and her new mentor played a crucial role in thwarting Darth Angral's vengeful campaign against the Republic. Their pursuit of the Sith's operatives led them across the galaxy, but in doing so, she attracted the attention of the Sith Emperor. Her past was exposed to the Jedi Order when the Emperor's agent attempted to capture her.
Despite some Jedi questioning her trustworthiness, Carsen successfully eradicated the Emperor's influence during the final battle against Angral, earning her the title of Jedi Knight. Carsen continued her service alongside her former teacher, now celebrated as the Hero of Tython, as the galaxy descended into renewed war. She participated in a Jedi initiative aimed at capturing the Sith Emperor, though this endeavor ultimately failed, resulting in the group's capture. After their eventual liberation from the Emperor's grasp, Carsen and her comrades raced to stop the Emperor's agents from unleashing death on a galactic scale. She fought alongside her allies in a mission where the Hero struck down the Sith Emperor on Dromund Kaas, shifting the momentum of the war.
In the years that followed, Carsen continued to journey with the Hero. However, the Hero's disappearance around the time of the Eternal Empire's invasion of the galaxy in 3636 BBY caused the Hero's group to break apart amidst the chaos. Eventually, she reunited with another member of the Hero's group—the former Sith Lord Scourge—and together, they embarked on a mission to track down and eliminate their old adversary, the Sith Emperor, who persistently evaded death's grasp. To achieve this, the pair struck down the Emperor's original body and joined forces with the Commander of the Eternal Alliance to ensure the Emperor's threat was extinguished once and for all.
Born on Dromund Kaas, the capital planet of the Sith Empire, in 3663 BBY, Kira Carsen was the daughter of Human parents. Both of her parents were Sith, and due to Carsen inheriting their Force-sensitivity, the Empire took her away from them at a very young age. This was as part of the Children of the Emperor project—a scheme by the Sith Emperor to create a legion of Force-sensitive puppets.
Carsen was dispatched to the Sith Academy on Korriban, where she received training as a Sith alongside other young Force-users like Valis. At the age of six, she killed her first tuk'ata, a hound indigenous to Korriban. During her time on Korriban, she crossed paths with the Sith Lord Darth Angral, so much so that the Sith was able to recognize Carsen as a fully-grown adult over a decade later.
During her time at the Academy, Carsen noticed that other children would disappear for unknown periods. Upon their return, they were changed, with no memory of their whereabouts or, at times, of who they or others were. In 3653 BBY, at ten years old, Carsen discovered she could not recall days or weeks of time and realized that she too had been taken. The process had been completed, and she was now truly a Child of the Emperor, meaning that the Emperor could possess her mind and body whenever he wished.
Fearing what the Emperor might do to her, Carsen resolved to escape the Empire, and she stowed away on a freighter that had delivered a shipment of slaves to Korriban. She abandoned the ship when it stopped at the moon Nar Shaddaa, where she spent the next eight years living in alleys and stealing to survive. She became part of a group of alien refugees in the High Security Lockdown, where she encountered the Evocii Enaq and the Anomid Darshyn.
Carsen spent her teenage years on Nar Shaddaa, utilizing her burgeoning Force powers to protect herself and her friends. She often wore extra layers of clothing to appear larger and was fiercely protective of her companions. When a street gang known as the Ur'kossags began terrorizing the refugees, Kira confronted the gang. However, her attempt to negotiate with them went awry, and Carsen ended up killing several gang members. Carsen's actions had unintended consequences, however, causing everyone in the area to fear the refugee group's reputation. Carsen did not understand what she had done, because she left the planet not long after.

Carsen's life took a turn when she tried to steal a hyperdrive engine from an expensive ship in the spaceport, intending to disassemble it and sell the parts. Unbeknownst to her, the ship belonged to Jedi Master Bela Kiwiiks, who was taken aback to find Carsen in the midst of her planned theft. Master Kiwiiks swiftly recognized Carsen's connection to the Force and extended an invitation for Carsen to join the Jedi Order.
During her time with Master Kiwiiks, they visited the agriworld [Uphrades], and Carsen was captivated by the planet's lush green appearance from space. Their relationship was quite relaxed, with Kiwiiks granting Carsen considerable freedom as long as she stayed out of the Jedi Master's way.
Two years into her apprenticeship, in 3643 BBY, Carsen and Kiwiiks were on the Jedi homeworld of Tython when the Jedi Order began facing organized resistance from the native Flesh Raiders. During this conflict, Carsen encountered the Padawan of Orgus Din.

Carsen and Kiwiiks were then dispatched to the Republic capital of Coruscant. They collaborated to prevent Tarnis from unleashing the Planet Prison. She chose to accompany her new partner, now a Jedi Knight, and Satele Shan made her the Padawan of the Hero of Tython after Bela Kiwiiks departed on a solo mission to Tatooine. Carsen was later captured by agents of Darth Angral on the Ord Mantell space station. Angral, who had vowed revenge against Carsen's new Master, demanded to know the Knight's whereabouts. Carsen misled him, suggesting her Master was on Corellia. As Angral's retainers watched over her, her new partner/master returned from the planet's surface and freed her. Unfortunately, this allowed the Sith Emperor to finally locate her. He arranged for another Child, Valis to retrieve her. Carsen and her teacher were able to best Valis but Carsen was forced to come clean about her past, and decided to reveal the truth to the Jedi Council. Despite Jaric Kaedan's attempt to have her imprisoned, the rest of the Council decided to show leniency.
Later, Carsen and her Master rescued Bela Kiwiiks on Tatooine, and redeemed Lord Praven. She told her former Master everything about her past. Kiwiiks, an understanding Jedi, explained that she always had great faith in Carsen and her potential to become a Jedi.

Eventually things came to a head on Tython. Darth Angral, driven insane by the death of his son, had attacked and planned to use the Desolator to destroy the entire planet, and the majority of the Jedi. Kira and her Master disabled the superweapon and confronted Angral. The Emperor possessed Carsen, and ordered Angral to kill the Knight. Soon after, Carsen regained her senses and felt the Emperor's hold over her. Angral encouraged her to join him, claiming it was her destiny to be Sith. Carsen stated that she'd "rather jump out of an airlock naked." When Angral failed, the Emperor stepped in, reasserting control over Carsen, and engaged the Knight. He had seen visions in which the Knight would rise and defeat him and he was determined to keep that from happening. When the Knight proved stronger, the Emperor called Carsen weak, unfinished from being away from him for so long. He then began to channel red Force energy through her in a renewed attempted to kill her Master, even if Carsen was to die in the process. Carsen refused to be his pawn and opened herself to the light, banishing the Emperor and severing the link. Returning to Tython's surface, Carsen was formally granted the rank of Jedi Knight by the Jedi Council.

Carsen eventually became part of a Jedi strike team, led by Master Tol Braga, tasked with capturing the Emperor and redeeming him to the light side. Unfortunately, they underestimated the Emperor's power, which he used to subdue the Jedi and corrupt them to the dark side. Carsen was placed in an interrogation device called the Tormentor, about to be subjected to torture by her own Master. Luckily, her Master had been released from the Emperor's control with the assistance of the ghost of Orgus Din. After disposing of the Sith Overseer, Carsen and her Master made to free their companions, only to find the Emperor's Wrath, Lord Scourge, had already done so. Scourge stated that he had waited three hundred years for the appearance of Carsen's Master, whom he believed to be the one who would destroy the Emperor.
Returning to Tython, Scourge revealed to the Council the Emperor's plan to consume all life in the galaxy but he had foreseen that the Hero of Tython would rise to stop him. Carsen continued to travel with her Master as they went to Belsavis, Voss and Corellia, well as redeem the fallen members of the Jedi strike team. Their efforts had weakened the Emperor enough that the Republic could make a strike on Dromund Kaas so the Hero of Tython could confront and defeat him. Carsen, along with the rest of the Hero's crew, excluding T7-01, kept their distance from the Emperor to avoid falling under his control while the Hero engaged him. Following the Emperor's apparent death, the Hero's crew rendezvoused with the flagship Valiant, where they are awarded with the Cross of Glory for their actions.
Shortly afterwards, she and her master were given a holocall from a fellow Child of the Emperor, Suri, who was driven mad from Vitiate's lingering calls to her. Since the two of them have previously broken free from the Emperor's control, Suri told them to meet her on Voss. When they arrived, Kira and the Hero of Tython tried to help her by convincing her to join them on Tython. Then a group of Sith, other Children of the Emperor, arrived. Led by Tannac, he told them that they managed to block out the Emperor and warned that if Suri went to Tython, she would die. After some deliberation with her master, Kira reluctantly allowed Suri to go with Tannac. She recorded the events and delivered it to the Jedi Council later on, to show how the Children of the Emperor were still active.

At a later stage in the Galactic War, Carsen was in the middle of a sparring session with Scourge, despite Doc's worry over using lightsabers. When their match came to an end, Carsen's Master suddenly had a vision of the planet Rishi. Coincidentally, T7 mentioned that Rishi had turned up on the Defender's navigation computer, so the Hero set a course for the planet.
During the Eternal Empire's Conquest, Kira's master went missing. After the war was lost, the Defender's crew disbanded, much to Kira's sadness. Eventually, Kira joined the fight against Emperor Arcann alongside rebels against the Eternal Empire. According to Master Ranos, her group was eventually tracked down by Arcann and suffered heavy losses. Later, Kira and her team attempted to infiltrate Arcann's carbonite prison, but were discovered and thwarted by High Justice Vaylin. Despite Vaylin's great strength in the Force, Kira survived the encounter and, according to Darth Hexid, was last seen disappearing into Wild Space.
At some point Kira regrouped with Scourge, and, learning from an "old ally" of the ex-Emperor's Wrath, they hunted down Vitiate's true body (which was kept in stasis). The pair then managed to destroyed Vitiate's true body at the exact moment the Outlander purged Vitiate's spirit, ensuring that the galaxy's greatest evil would never return. However, in doing so, they unwittingly unleashed a powerful Sith ritual Vitiate carved into his body as a final failsafe. Having been infused with the Emperor's power in the past both she and Scourge were rendered comatose for just over a year until Satele Shan and her followers managed to save them. But Shan and her people also fell to the plague unleashed by Vitiate's body, prompting Carsen and Scourge to quarantine them aboard a vessel they left drifting in the Outer Rim until help could be found.

Sensing the plague victims' minds were communicating and merging together, Carsen and Scourge suspected the plague might be trying to resurrect Vitiate. Concerned that Vitiate might've faked his death as he had done in the past, Scourge traveled to Mek-Sha and ambushed the Outlander, briefly engaging his opponent in battle before fleeing, confident that Vitiate was indeed dead. Following the Meridian Complex assault, Carsen and Scourge made themselves known to the Outlander and later explained the threat of Vitiate's plague at the Alliance base on Odessen.
In the year 3626 BBY, Kira Carsen and Scourge, with the aid of T7-O1, were able to locate the ship that they had placed Satele and her students aboard. With the aid of the Alliance Commander, they made their way aboard in order to stop Tenebrae from fully resurrecting himself. They were attacked by remnants of the Emperor's Hand, led by Servant Four, whom they fought with in order to get to Satele. Carsen, following their fight with Servant Four, then led them in a ritual that allowed them to enter Satele Shan's mind.

Once inside, Carsen found herself alone with the Alliance Commander, having been separated from Scourge and the rest. Pushing onwards, they encountered the visage of Tenebrae, who taunted them for believing they could ever try to defeat him. Soon after, Carsen was separated from the Commander, who continued their journey to the center of Satele Shan's mind, aided by the spirits of Revan, Meetra Surik, and Darth Marr. Once at the center, Carsen met up with the Commander and helped fight against the Emperor, alongside the spirits of all those that had been victimized by him over the centuries. After a long-fought battle, they were successfully able to vanquish the Sith Emperor once and for all.
Later that year, Carsen accompanied the Alliance Commander, along with Sana-Rae, to the planet of Elom. This was in an attempt to uncover what Darth Malgus had done at the Temple of Nul shortly before being captured. After touching an artifact from the temple, Carsen believed that she had uncovered that Nul had once been a Child of the Emperor. However, this was false. Carsen then offered to help the Commander locate Sa'har Kateen.

Kira Carsen possessed a strong will and a confident nature, displaying a profound sense of devotion to her friends and allies. Yet, beneath her assured exterior, she harbored anxieties stemming from her past, coupled with a deep-seated yearning to prove her worth. She worried that her history within the Sith Empire would lead her acquaintances to reject her if they were to discover it. Consequently, Kira was resolute in demonstrating her allegiance and value to the Jedi Order. She also exhibited a mild form of claustrophobia, often concealing her fears behind a witty and sharp-tongued facade.
Kira Carsen demonstrated proficiency in wielding a double-bladed lightsaber. Her combat prowess enabled her to inflict substantial damage within brief intervals. Kira possessed considerable strength in the Force, exemplified by her ability to break free from the Emperor's control during the Desolator Crisis.
Kira Carsen is a character featured in Star Wars: The Old Republic, the MMORPG developed by BioWare. She serves as a companion for the Jedi Knight character. Her physical attributes include fair skin, red hair, full lips, and a scar located on her left cheek. Players can acquire her as a companion during the class storyline that unfolds on Coruscant. Laura Bailey provides the voice for Kira.
If the Jedi Knight player character is male, the player has the option of pursuing a romantic relationship with Kira, potentially leading to marriage. Initiating a romance will influence dialogue in certain story missions. If the player is romancing Kira, then she will speak to the player about the future, children as one of the last topics. If the player is married to Kira, then a cutscene of her speaking to the player at the Emperor's temple won't be seen.
Following the conclusion of the Onslaught expansion, the player has the opportunity to reaffirm their romantic commitment to Kira. Additionally, if the player is a female Jedi Knight who initially flirts with Kira, she later expresses that she has always been "a little... in love" with the player since their disappearance. The player can reciprocate those feeling and initiate a relationship with Kira.